Zucchini is one of my favorited veggies from the Farmers' Market. They are so inexpensive and the perfect replacement for any starchy foods.
Zucchini, mushrooms and goat cheese create a perfect combination. I love the freshness that tomatoes add to he salad, you can always replace them with some grilled bell peppers. If you don't love goat cheese, you can use feta cheese and still achieve a very similar result.